<template>
  <div v-loading.fullscreen.lock="fullscreenLoading">
    <div class="upload">
      <el-upload
        :action="`${path}/fileUploadAndDownload/upload`"
        :before-upload="checkFile"
        :headers="{ 'x-token': token }"
        :on-error="uploadError"
        :on-success="uploadSuccess"
        :show-file-list="false"
      >
        <el-button size="small" type="primary">点击上传</el-button>
        <div class="el-upload__tip" slot="tip">
          只能上传jpg/png文件，且不超过500kb
        </div>
      </el-upload>
      <el-table :data="tableData" border stripe>
        <el-table-column label="预览" width="100">
          <template slot-scope="scope">
            <img
              :alt="scope.row.alt"
              :src="scope.row.url"
              height="80"
              width="80"
            />
          </template>
        </el-table-column>
        <el-table-column label="日期" prop="UpdatedAt" width="180">
          <template slot-scope="scope">
            <div>{{ scope.row.UpdatedAt | formatDate }}</div>
          </template>
        </el-table-column>
        <el-table-column
          label="文件名"
          prop="name"
          width="180"
        ></el-table-column>
        <el-table-column label="链接" prop="url"></el-table-column>
        <el-table-column label="标签" prop="tag" width="100">
          <template slot-scope="scope">
            <el-tag
              :type="scope.row.tag === 'jpg' ? 'primary' : 'success'"
              disable-transitions
              >{{ scope.row.tag }}</el-tag
            >
          </template>
        </el-table-column>
        <el-table-column label="操作" width="100">
          <template slot-scope="scope">
            <el-button @click="downloadFile(scope.row)" size="small" type="text"
              >下载</el-button
            >
            <el-button @click="deleteFile(scope.row)" size="small" type="text"
              >删除</el-button
            >
          </template>
        </el-table-column>
      </el-table>
      <el-pagination
        :current-page="page"
        :page-size="pageSize"
        :page-sizes="[10, 30, 50, 100]"
        :style="{ float: 'right', padding: '20px' }"
        :total="total"
        @current-change="handleCurrentChange"
        @size-change="handleSizeChange"
        layout="total, sizes, prev, pager, next, jumper"
      ></el-pagination>
    </div>
  </div>
</template>

<script>
const path = process.env.VUE_APP_BASE_API;
import { mapGetters } from "vuex";
import infoList from "@/components/mixins/infoList";
import { getFileList, deleteFile } from "@/api/fileUploadAndDownload";
import { downloadImage } from "@/utils/downloadImg";
import { formatTimeToStr } from "@/utils/data";
export default {
  name: "Upload",
  mixins: [infoList],
  data() {
    return {
      fullscreenLoading: false,
      listApi: getFileList,
      path: path,
      tableData: [],
    };
  },
  computed: {
    ...mapGetters("user", ["userInfo", "token"]),
  },
  filters: {
    formatDate: function(time) {
      if (time != null && time != "") {
        var date = new Date(time);
        return formatTimeToStr(date, "yyyy-MM-dd hh:mm:ss");
      } else {
        return "";
      }
    },
  },
  methods: {
    async deleteFile(row) {
      this.$confirm("此操作将永久文件, 是否继续?", "提示", {
        confirmButtonText: "确定",
        cancelButtonText: "取消",
        type: "warning",
      })
        .then(async () => {
          const res = await deleteFile(row);
          if (res.code == 0) {
            this.$message({
              type: "success",
              message: "删除成功!",
            });
            this.getTableData();
          }
        })
        .catch(() => {
          this.$message({
            type: "info",
            message: "已取消删除",
          });
        });
    },
    checkFile(file) {
      this.fullscreenLoading = true;
      const isJPG = file.type === "image/jpeg";
      const isPng = file.type === "image/png";
      const isLt2M = file.size / 1024 / 1024 < 2;
      if (!isJPG && !isPng) {
        this.$message.error("上传头像图片只能是 JPG或png 格式!");
        this.fullscreenLoading = false;
      }
      if (!isLt2M) {
        this.$message.error("上传头像图片大小不能超过 2MB!");
        this.fullscreenLoading = false;
      }
      return (isPng || isJPG) && isLt2M;
    },
    uploadSuccess(res) {
      this.fullscreenLoading = false;
      if (res.code == 0) {
        this.$message({
          type: "success",
          message: "上传成功",
        });
        if (res.code == 0) {
          this.getTableData();
        }
      } else {
        this.$message({
          type: "warning",
          message: res.msg,
        });
      }
    },
    uploadError() {
      this.$message({
        type: "error",
        message: "上传失败",
      });
      this.fullscreenLoading = false;
    },
    downloadFile(row) {
      downloadImage(row.url, row.name);
    },
  },
  created() {
    this.getTableData();
  },
};
</script>
